中国物理B ›› 2015, Vol. 24 ›› Issue (5): 54207-054207.doi: 10.1088/1674-1056/24/5/054207

• ELECTROMAGNETISM, OPTICS, ACOUSTICS, HEAT TRANSFER, CLASSICAL MECHANICS, AND FLUID DYNAMICS • 上一篇    下一篇

Tunable and broadband microwave frequency combs based on a semiconductor laser with incoherent optical feedback

赵茂戎a, 吴正茂a, 邓涛a, 周桢力a, 夏光琼a b   

  1. a School of Physical Science and Technology, Southwest University, Chongqing 400715, China;
    b State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China
  • 收稿日期:2014-08-17 修回日期:2014-11-03 出版日期:2015-05-05 发布日期:2015-05-05
  • 基金资助:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61178011, 11204248, 61475127, and 61275116), the Natural Science Foundation of Chongqing City, China (Grant Nos. 2012jjB40011 and 2012jjA40012), and the Open Fund of the State Key Lab of Millimeter Waves of China (Grant No. K201418).

Tunable and broadband microwave frequency combs based on a semiconductor laser with incoherent optical feedback

Zhao Mao-Rong (赵茂戎)a, Wu Zheng-Mao (吴正茂)a, Deng Tao (邓涛)a, Zhou Zhen-Li (周桢力)a, Xia Guang-Qiong (夏光琼)a b   

  1. a School of Physical Science and Technology, Southwest University, Chongqing 400715, China;
    b State Key Laboratory of Millimeter Waves, Southeast University, Nanjing 210096, China
  • Received:2014-08-17 Revised:2014-11-03 Online:2015-05-05 Published:2015-05-05
  • Contact: Xia Guang-Qiong E-mail:gqxia@swu.edu.cn
  • About author:42.55.Px; 42.65.Sf; 84.40.-x
  • Supported by:

    Project supported by the National Natural Science Foundation of China (Grant Nos. 61178011, 11204248, 61475127, and 61275116), the Natural Science Foundation of Chongqing City, China (Grant Nos. 2012jjB40011 and 2012jjA40012), and the Open Fund of the State Key Lab of Millimeter Waves of China (Grant No. K201418).

摘要:

Based on a semiconductor laser (SL) with incoherent optical feedback, a novel all-optical scheme for generating tunable and broadband microwave frequency combs (MFCs) is proposed and investigated numerically. The results show that, under suitable operation parameters, the SL with incoherent optical feedback can be driven to operate at a regular pulsing state, and the generated MFCs have bandwidths broader than 40 GHz within a 10 dB amplitude variation. For a fixed bias current, the line spacing (or repetition frequency) of the MFCs can be easily tuned by varying the feedback delay time and the feedback strength, and the tuning range of the line spacing increases with the increase in the bias current. The linewidth of the MFCs is sensitive to the variation of the feedback delay time and the feedback strength, and a linewidth of tens of KHz can be achieved through finely adjusting the feedback delay time and the feedback strength. In addition, mappings of amplitude variation, repetition frequency, and linewidth of MFCs in the parameter space of the feedback delay time and the feedback strength are presented.

关键词: semiconductor laser, incoherent optical feedback, microwave frequency combs

Abstract:

Based on a semiconductor laser (SL) with incoherent optical feedback, a novel all-optical scheme for generating tunable and broadband microwave frequency combs (MFCs) is proposed and investigated numerically. The results show that, under suitable operation parameters, the SL with incoherent optical feedback can be driven to operate at a regular pulsing state, and the generated MFCs have bandwidths broader than 40 GHz within a 10 dB amplitude variation. For a fixed bias current, the line spacing (or repetition frequency) of the MFCs can be easily tuned by varying the feedback delay time and the feedback strength, and the tuning range of the line spacing increases with the increase in the bias current. The linewidth of the MFCs is sensitive to the variation of the feedback delay time and the feedback strength, and a linewidth of tens of KHz can be achieved through finely adjusting the feedback delay time and the feedback strength. In addition, mappings of amplitude variation, repetition frequency, and linewidth of MFCs in the parameter space of the feedback delay time and the feedback strength are presented.

Key words: semiconductor laser, incoherent optical feedback, microwave frequency combs

中图分类号:  (Semiconductor lasers; laser diodes)

  • 42.55.Px
42.65.Sf (Dynamics of nonlinear optical systems; optical instabilities, optical chaos and complexity, and optical spatio-temporal dynamics) 84.40.-x (Radiowave and microwave (including millimeter wave) technology)